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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_BASE_LAYERED_NETWORK_DELEGATE_H_
#define NET_BASE_LAYERED_NETWORK_DELEGATE_H_
#include <stdint.h>
#include <memory>
#include "base/strings/string16.h"
#include "net/base/completion_callback.h"
#include "net/base/net_export.h"
#include "net/base/network_delegate.h"
#include "net/cookies/canonical_cookie.h"
#include "net/proxy/proxy_retry_info.h"
class GURL;
namespace base {
class FilePath;
}
namespace net {
class CookieOptions;
class HttpRequestHeaders;
class HttpResponseHeaders;
class ProxyInfo;
class URLRequest;
// LayeredNetworkDelegate takes a |network_delegate| and extends it. When
// On*() is called, the On*Internal() method of this is first called and then
// the On*() of |network_delegate| is called. On*Internal() methods have no
// return values, and cannot prevent calling into the nested network delegate.
class NET_EXPORT LayeredNetworkDelegate : public NetworkDelegate {
public:
explicit LayeredNetworkDelegate(
std::unique_ptr<NetworkDelegate> nested_network_delegate);
~LayeredNetworkDelegate() override;
// NetworkDelegate implementation:
int OnBeforeURLRequest(URLRequest* request,
const CompletionCallback& callback,
GURL* new_url) final;
int OnBeforeStartTransaction(URLRequest* request,
const CompletionCallback& callback,
HttpRequestHeaders* headers) final;
void OnBeforeSendHeaders(URLRequest* request,
const ProxyInfo& proxy_info,
const ProxyRetryInfoMap& proxy_retry_info,
HttpRequestHeaders* headers) final;
void OnStartTransaction(URLRequest* request,
const HttpRequestHeaders& headers) final;
int OnHeadersReceived(
URLRequest* request,
const CompletionCallback& callback,
const HttpResponseHeaders* original_response_headers,
scoped_refptr<HttpResponseHeaders>* override_response_headers,
GURL* allowed_unsafe_redirect_url) final;
void OnBeforeRedirect(URLRequest* request, const GURL& new_location) final;
void OnResponseStarted(URLRequest* request, int net_error) final;
void OnNetworkBytesReceived(URLRequest* request,
int64_t bytes_received) final;
void OnNetworkBytesSent(URLRequest* request, int64_t bytes_sent) final;
void OnCompleted(URLRequest* request, bool started, int net_error) final;
void OnURLRequestDestroyed(URLRequest* request) final;
void OnPACScriptError(int line_number, const base::string16& error) final;
AuthRequiredResponse OnAuthRequired(URLRequest* request,
const AuthChallengeInfo& auth_info,
const AuthCallback& callback,
AuthCredentials* credentials) final;
bool OnCanGetCookies(const URLRequest& request,
const CookieList& cookie_list) final;
bool OnCanSetCookie(const URLRequest& request,
const std::string& cookie_line,
CookieOptions* options) final;
bool OnCanAccessFile(const URLRequest& request,
const base::FilePath& path) const final;
bool OnCanEnablePrivacyMode(const GURL& url,
const GURL& first_party_for_cookies) const final;
bool OnAreExperimentalCookieFeaturesEnabled() const final;
bool OnAreStrictSecureCookiesEnabled() const final;
bool OnCancelURLRequestWithPolicyViolatingReferrerHeader(
const URLRequest& request,
const GURL& target_url,
const GURL& referrer_url) const final;
protected:
virtual void OnBeforeURLRequestInternal(URLRequest* request,
const CompletionCallback& callback,
GURL* new_url);
virtual void OnBeforeStartTransactionInternal(
URLRequest* request,
const CompletionCallback& callback,
HttpRequestHeaders* headers);
virtual void OnBeforeSendHeadersInternal(
URLRequest* request,
const ProxyInfo& proxy_info,
const ProxyRetryInfoMap& proxy_retry_info,
HttpRequestHeaders* headers);
virtual void OnStartTransactionInternal(URLRequest* request,
const HttpRequestHeaders& headers);
virtual void OnHeadersReceivedInternal(
URLRequest* request,
const CompletionCallback& callback,
const HttpResponseHeaders* original_response_headers,
scoped_refptr<HttpResponseHeaders>* override_response_headers,
GURL* allowed_unsafe_redirect_url);
virtual void OnBeforeRedirectInternal(URLRequest* request,
const GURL& new_location);
virtual void OnResponseStartedInternal(URLRequest* request);
virtual void OnNetworkBytesReceivedInternal(URLRequest* request,
int64_t bytes_received);
virtual void OnNetworkBytesSentInternal(URLRequest* request,
int64_t bytes_sent);
virtual void OnCompletedInternal(URLRequest* request, bool started);
virtual void OnURLRequestDestroyedInternal(URLRequest* request);
virtual void OnPACScriptErrorInternal(int line_number,
const base::string16& error);
virtual void OnCanGetCookiesInternal(const URLRequest& request,
const CookieList& cookie_list);
virtual void OnCanSetCookieInternal(const URLRequest& request,
const std::string& cookie_line,
CookieOptions* options);
virtual void OnAuthRequiredInternal(URLRequest* request,
const AuthChallengeInfo& auth_info,
const AuthCallback& callback,
AuthCredentials* credentials);
virtual void OnCanAccessFileInternal(const URLRequest& request,
const base::FilePath& path) const;
virtual void OnCanEnablePrivacyModeInternal(
const GURL& url,
const GURL& first_party_for_cookies) const;
virtual void OnAreExperimentalCookieFeaturesEnabledInternal() const;
virtual void OnAreStrictSecureCookiesEnabledInternal() const;
virtual void OnCancelURLRequestWithPolicyViolatingReferrerHeaderInternal(
const URLRequest& request,
const GURL& target_url,
const GURL& referrer_url) const;
private:
std::unique_ptr<NetworkDelegate> nested_network_delegate_;
};
} // namespace net
#endif // NET_BASE_LAYERED_NETWORK_DELEGATE_H_